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从Saccharomyces cerevisiae中优化L-asparaginase 1的重组生成,使用响应表面方法

Vida Ebrahimi¹, Atieh Hashemi²

¹Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, No. 2660, Valiasr-Niayesh Junction, Vali-e-Asr Ave, Tehran 1991953381, Iran.

Folia microbiologica

|April 6, 2024

概括

在大肠杆菌中使用响应表面方法 (RSM) 优化复合L-阿斯巴拉金酶的产生显著增加了酶产量. 这种方法解决了癌症治疗酶生产的挑战,为大规模发酵铺平了道路.

科学领域:

生物技术是生物技术.
酵素工程是什么? 酶工程是什么
癌症治疗方法癌症治疗方法

背景情况:

L-阿斯巴拉基因酶对于白血病治疗至关重要,但面临着生产挑战.
再组合生产为低产量,高成本和免疫性问题提供了解决方案.
优化对大肠杆菌等微生物宿主中的表达是有效生产L-asparaginase的关键.

研究的目的:

为了优化从Escherichia coli K-12中Saccharomyces cerevisiae中L-asparaginase 1的重组生成.
为了研究异-b-LD-thiogalactopyranoside (IPTG) 度,细胞密度,诱导时间和温度对酶表达的影响.
通过响应表面方法 (RSM) 提高L-阿斯巴拉金酶产量.

主要方法:

采用了带有 Box-Behnken 设计 (BBD) 的响应表面方法 (RSM).
为了分析关键诱导参数的影响,进行了29个实验.
使用统计建模来确定L-asparaginase 1表达的最佳条件.

主要成果:

诱导后的时间,细胞密度和温度显著影响了L-asparaginase的表达.
诱导后的时间被确定为影响最大的变量.
在优化的条件下 (0.8细胞密度,0.7毫米IPTG,4小时,30°C) 产生了93.52μg/ml的L-阿斯巴拉金酶,验证了模型.

结论:

在大肠杆菌中,RSM有效优化了L-asparaginase 1的产生.
优化的过程显示了这种重要的抗癌酶可扩展发酵的潜力.
进一步的研究应该探索替代宿主和发酵参数,以最大限度地提高产量.

关键词:

埃舍里希亚大肠杆菌 (Escherichia coli) 是一个大肠杆菌.这种植物是Saccharomyces cerevisiae.癌症治疗治疗癌症治疗在L-asparaginase的使用中.再组合产品的生产.响应表面方法 (RSM)

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